From: Rasesh Mody <rasesh.mody@cavium.com>
Date: Tue, 19 Sep 2017 01:29:47 +0000 (-0700)
Subject: net/qede/base: interchangeably use SB between PF and VF
X-Git-Tag: spdx-start~1935
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=6e4fcea92f40de2306dcd9e0668cae90947823ae;p=dpdk.git

net/qede/base: interchangeably use SB between PF and VF

Status Block reallocation - allow a PF and its child VF to change SB
between them using new base driver APIs.

The changes that are inside base driver flows are:

New APIs ecore_int_igu_reset_cam() and ecore_int_igu_reset_cam_default()
added to reset IGU CAM.
 a. During hw_prepare(), driver would re-initialize the IGU CAM.
 b. During hw_stop(), driver would initialize the IGU CAM to default.

Use igu_sb_id instead of sb_idx [protocol index] to allow setting of
the timer-resolution in CAU[coalescing algorithm unit] for all SBs,
sb_idx could limit SBs 0-11 only to be able change their timer-resolution.

Signed-off-by: Rasesh Mody <rasesh.mody@cavium.com>
---

diff --git a/drivers/net/qede/base/ecore.h b/drivers/net/qede/base/ecore.h
index 10fb16a561..64a34169ce 100644
--- a/drivers/net/qede/base/ecore.h
+++ b/drivers/net/qede/base/ecore.h
@@ -279,7 +279,6 @@ struct ecore_qm_iids {
  * is received from MFW.
  */
 enum ecore_resources {
-	ECORE_SB,
 	ECORE_L2_QUEUE,
 	ECORE_VPORT,
 	ECORE_RSS_ENG,
@@ -293,7 +292,13 @@ enum ecore_resources {
 	ECORE_CMDQS_CQS,
 	ECORE_RDMA_STATS_QUEUE,
 	ECORE_BDQ,
-	ECORE_MAX_RESC,			/* must be last */
+
+	/* This is needed only internally for matching against the IGU.
+	 * In case of legacy MFW, would be set to `0'.
+	 */
+	ECORE_SB,
+
+	ECORE_MAX_RESC,
 };
 
 /* Features that require resources, given as input to the resource management
@@ -556,10 +561,6 @@ struct ecore_hwfn {
 	bool				b_rdma_enabled_in_prs;
 	u32				rdma_prs_search_reg;
 
-	/* Array of sb_info of all status blocks */
-	struct ecore_sb_info		*sbs_info[MAX_SB_PER_PF_MIMD];
-	u16				num_sbs;
-
 	struct ecore_cxt_mngr		*p_cxt_mngr;
 
 	/* Flag indicating whether interrupts are enabled or not*/
diff --git a/drivers/net/qede/base/ecore_dev.c b/drivers/net/qede/base/ecore_dev.c
index 4a31d67ac0..40b544bf75 100644
--- a/drivers/net/qede/base/ecore_dev.c
+++ b/drivers/net/qede/base/ecore_dev.c
@@ -1232,7 +1232,7 @@ static enum _ecore_status_t ecore_hw_init_chip(struct ecore_hwfn *p_hwfn,
 static void ecore_init_cau_rt_data(struct ecore_dev *p_dev)
 {
 	u32 offset = CAU_REG_SB_VAR_MEMORY_RT_OFFSET;
-	int i, sb_id;
+	int i, igu_sb_id;
 
 	for_each_hwfn(p_dev, i) {
 		struct ecore_hwfn *p_hwfn = &p_dev->hwfns[i];
@@ -1242,16 +1242,18 @@ static void ecore_init_cau_rt_data(struct ecore_dev *p_dev)
 
 		p_igu_info = p_hwfn->hw_info.p_igu_info;
 
-		for (sb_id = 0; sb_id < ECORE_MAPPING_MEMORY_SIZE(p_dev);
-		     sb_id++) {
-			p_block = &p_igu_info->igu_map.igu_blocks[sb_id];
+		for (igu_sb_id = 0;
+		     igu_sb_id < ECORE_MAPPING_MEMORY_SIZE(p_dev);
+		     igu_sb_id++) {
+			p_block = &p_igu_info->entry[igu_sb_id];
 
 			if (!p_block->is_pf)
 				continue;
 
 			ecore_init_cau_sb_entry(p_hwfn, &sb_entry,
 						p_block->function_id, 0, 0);
-			STORE_RT_REG_AGG(p_hwfn, offset + sb_id * 2, sb_entry);
+			STORE_RT_REG_AGG(p_hwfn, offset + igu_sb_id * 2,
+					 sb_entry);
 		}
 	}
 }
@@ -2255,6 +2257,13 @@ enum _ecore_status_t ecore_hw_stop(struct ecore_dev *p_dev)
 		ecore_wr(p_hwfn, p_ptt, IGU_REG_LEADING_EDGE_LATCH, 0);
 		ecore_wr(p_hwfn, p_ptt, IGU_REG_TRAILING_EDGE_LATCH, 0);
 		ecore_int_igu_init_pure_rt(p_hwfn, p_ptt, false, true);
+		rc = ecore_int_igu_reset_cam_default(p_hwfn, p_ptt);
+		if (rc != ECORE_SUCCESS) {
+			DP_NOTICE(p_hwfn, true,
+				  "Failed to return IGU CAM to default\n");
+			rc2 = ECORE_UNKNOWN_ERROR;
+		}
+
 		/* Need to wait 1ms to guarantee SBs are cleared */
 		OSAL_MSLEEP(1);
 
@@ -2423,31 +2432,32 @@ static void get_function_id(struct ecore_hwfn *p_hwfn)
 static void ecore_hw_set_feat(struct ecore_hwfn *p_hwfn)
 {
 	u32 *feat_num = p_hwfn->hw_info.feat_num;
+	struct ecore_sb_cnt_info sb_cnt;
 	u32 non_l2_sbs = 0;
 
+	OSAL_MEM_ZERO(&sb_cnt, sizeof(sb_cnt));
+	ecore_int_get_num_sbs(p_hwfn, &sb_cnt);
+
 	/* L2 Queues require each: 1 status block. 1 L2 queue */
 	if (ECORE_IS_L2_PERSONALITY(p_hwfn)) {
-		struct ecore_sb_cnt_info sb_cnt_info;
-
-		OSAL_MEM_ZERO(&sb_cnt_info, sizeof(sb_cnt_info));
-		ecore_int_get_num_sbs(p_hwfn, &sb_cnt_info);
-
 		/* Start by allocating VF queues, then PF's */
 		feat_num[ECORE_VF_L2_QUE] =
 			OSAL_MIN_T(u32,
 				   RESC_NUM(p_hwfn, ECORE_L2_QUEUE),
-				   sb_cnt_info.sb_iov_cnt);
+				   sb_cnt.iov_cnt);
 		feat_num[ECORE_PF_L2_QUE] =
 			OSAL_MIN_T(u32,
-				   RESC_NUM(p_hwfn, ECORE_SB) - non_l2_sbs,
+				   sb_cnt.cnt - non_l2_sbs,
 				   RESC_NUM(p_hwfn, ECORE_L2_QUEUE) -
 				   FEAT_NUM(p_hwfn, ECORE_VF_L2_QUE));
 	}
 
-	feat_num[ECORE_FCOE_CQ] = OSAL_MIN_T(u32, RESC_NUM(p_hwfn, ECORE_SB),
-					     RESC_NUM(p_hwfn, ECORE_CMDQS_CQS));
-	feat_num[ECORE_ISCSI_CQ] = OSAL_MIN_T(u32, RESC_NUM(p_hwfn, ECORE_SB),
-					     RESC_NUM(p_hwfn, ECORE_CMDQS_CQS));
+	feat_num[ECORE_FCOE_CQ] = OSAL_MIN_T(u32, sb_cnt.cnt,
+					     RESC_NUM(p_hwfn,
+						      ECORE_CMDQS_CQS));
+	feat_num[ECORE_ISCSI_CQ] = OSAL_MIN_T(u32, sb_cnt.cnt,
+					      RESC_NUM(p_hwfn,
+						       ECORE_CMDQS_CQS));
 
 	DP_VERBOSE(p_hwfn, ECORE_MSG_PROBE,
 		   "#PF_L2_QUEUE=%d VF_L2_QUEUES=%d #ROCE_CNQ=%d #FCOE_CQ=%d #ISCSI_CQ=%d #SB=%d\n",
@@ -2456,14 +2466,12 @@ static void ecore_hw_set_feat(struct ecore_hwfn *p_hwfn)
 		   (int)FEAT_NUM(p_hwfn, ECORE_RDMA_CNQ),
 		   (int)FEAT_NUM(p_hwfn, ECORE_FCOE_CQ),
 		   (int)FEAT_NUM(p_hwfn, ECORE_ISCSI_CQ),
-		   RESC_NUM(p_hwfn, ECORE_SB));
+		   (int)sb_cnt.cnt);
 }
 
 const char *ecore_hw_get_resc_name(enum ecore_resources res_id)
 {
 	switch (res_id) {
-	case ECORE_SB:
-		return "SB";
 	case ECORE_L2_QUEUE:
 		return "L2_QUEUE";
 	case ECORE_VPORT:
@@ -2490,6 +2498,8 @@ const char *ecore_hw_get_resc_name(enum ecore_resources res_id)
 		return "RDMA_STATS_QUEUE";
 	case ECORE_BDQ:
 		return "BDQ";
+	case ECORE_SB:
+		return "SB";
 	default:
 		return "UNKNOWN_RESOURCE";
 	}
@@ -2565,14 +2575,8 @@ enum _ecore_status_t ecore_hw_get_dflt_resc(struct ecore_hwfn *p_hwfn,
 {
 	u8 num_funcs = p_hwfn->num_funcs_on_engine;
 	bool b_ah = ECORE_IS_AH(p_hwfn->p_dev);
-	struct ecore_sb_cnt_info sb_cnt_info;
 
 	switch (res_id) {
-	case ECORE_SB:
-		OSAL_MEM_ZERO(&sb_cnt_info, sizeof(sb_cnt_info));
-		ecore_int_get_num_sbs(p_hwfn, &sb_cnt_info);
-		*p_resc_num = sb_cnt_info.sb_cnt;
-		break;
 	case ECORE_L2_QUEUE:
 		*p_resc_num = (b_ah ? MAX_NUM_L2_QUEUES_K2 :
 				 MAX_NUM_L2_QUEUES_BB) / num_funcs;
@@ -2629,6 +2633,12 @@ enum _ecore_status_t ecore_hw_get_dflt_resc(struct ecore_hwfn *p_hwfn,
 		if (!*p_resc_num)
 			*p_resc_start = 0;
 		break;
+	case ECORE_SB:
+		/* Since we want its value to reflect whether MFW supports
+		 * the new scheme, have a default of 0.
+		 */
+		*p_resc_num = 0;
+		break;
 	default:
 		*p_resc_start = *p_resc_num * p_hwfn->enabled_func_idx;
 		break;
@@ -2693,14 +2703,9 @@ __ecore_hw_set_resc_info(struct ecore_hwfn *p_hwfn, enum ecore_resources res_id,
 		goto out;
 	}
 
-	/* TBD - remove this when revising the handling of the SB resource */
-	if (res_id == ECORE_SB) {
-		/* Excluding the slowpath SB */
-		*p_resc_num -= 1;
-		*p_resc_start -= p_hwfn->enabled_func_idx;
-	}
-
-	if (*p_resc_num != dflt_resc_num || *p_resc_start != dflt_resc_start) {
+	if ((*p_resc_num != dflt_resc_num ||
+	     *p_resc_start != dflt_resc_start) &&
+	    res_id != ECORE_SB) {
 		DP_INFO(p_hwfn,
 			"MFW allocation for resource %d [%s] differs from default values [%d,%d vs. %d,%d]%s\n",
 			res_id, ecore_hw_get_resc_name(res_id), *p_resc_num,
@@ -2850,6 +2855,10 @@ static enum _ecore_status_t ecore_hw_get_resc(struct ecore_hwfn *p_hwfn,
 		return ECORE_INVAL;
 	}
 
+	/* This will also learn the number of SBs from MFW */
+	if (ecore_int_igu_reset_cam(p_hwfn, p_hwfn->p_main_ptt))
+		return ECORE_INVAL;
+
 	ecore_hw_set_feat(p_hwfn);
 
 	DP_VERBOSE(p_hwfn, ECORE_MSG_PROBE,
@@ -4540,7 +4549,7 @@ enum _ecore_status_t ecore_set_rxq_coalesce(struct ecore_hwfn *p_hwfn,
 	timeset = (u8)(coalesce >> timer_res);
 
 	rc = ecore_int_set_timer_res(p_hwfn, p_ptt, timer_res,
-				     p_cid->abs.sb_idx, false);
+				     p_cid->sb_igu_id, false);
 	if (rc != ECORE_SUCCESS)
 		goto out;
 
@@ -4581,7 +4590,7 @@ enum _ecore_status_t ecore_set_txq_coalesce(struct ecore_hwfn *p_hwfn,
 	timeset = (u8)(coalesce >> timer_res);
 
 	rc = ecore_int_set_timer_res(p_hwfn, p_ptt, timer_res,
-				     p_cid->abs.sb_idx, true);
+				     p_cid->sb_igu_id, true);
 	if (rc != ECORE_SUCCESS)
 		goto out;
 
diff --git a/drivers/net/qede/base/ecore_int.c b/drivers/net/qede/base/ecore_int.c
index b57c510ca7..f8b104a431 100644
--- a/drivers/net/qede/base/ecore_int.c
+++ b/drivers/net/qede/base/ecore_int.c
@@ -1369,6 +1369,49 @@ void ecore_init_cau_sb_entry(struct ecore_hwfn *p_hwfn,
 	SET_FIELD(p_sb_entry->data, CAU_SB_ENTRY_STATE1, cau_state);
 }
 
+static void _ecore_int_cau_conf_pi(struct ecore_hwfn *p_hwfn,
+				   struct ecore_ptt *p_ptt,
+				   u16 igu_sb_id, u32 pi_index,
+				   enum ecore_coalescing_fsm coalescing_fsm,
+				   u8 timeset)
+{
+	struct cau_pi_entry pi_entry;
+	u32 sb_offset, pi_offset;
+
+	if (IS_VF(p_hwfn->p_dev))
+		return;/* @@@TBD MichalK- VF CAU... */
+
+	sb_offset = igu_sb_id * PIS_PER_SB;
+	OSAL_MEMSET(&pi_entry, 0, sizeof(struct cau_pi_entry));
+
+	SET_FIELD(pi_entry.prod, CAU_PI_ENTRY_PI_TIMESET, timeset);
+	if (coalescing_fsm == ECORE_COAL_RX_STATE_MACHINE)
+		SET_FIELD(pi_entry.prod, CAU_PI_ENTRY_FSM_SEL, 0);
+	else
+		SET_FIELD(pi_entry.prod, CAU_PI_ENTRY_FSM_SEL, 1);
+
+	pi_offset = sb_offset + pi_index;
+	if (p_hwfn->hw_init_done) {
+		ecore_wr(p_hwfn, p_ptt,
+			 CAU_REG_PI_MEMORY + pi_offset * sizeof(u32),
+			 *((u32 *)&(pi_entry)));
+	} else {
+		STORE_RT_REG(p_hwfn,
+			     CAU_REG_PI_MEMORY_RT_OFFSET + pi_offset,
+			     *((u32 *)&(pi_entry)));
+	}
+}
+
+void ecore_int_cau_conf_pi(struct ecore_hwfn *p_hwfn,
+			   struct ecore_ptt *p_ptt,
+			   struct ecore_sb_info *p_sb, u32 pi_index,
+			   enum ecore_coalescing_fsm coalescing_fsm,
+			   u8 timeset)
+{
+	_ecore_int_cau_conf_pi(p_hwfn, p_ptt, p_sb->igu_sb_id,
+			       pi_index, coalescing_fsm, timeset);
+}
+
 void ecore_int_cau_conf_sb(struct ecore_hwfn *p_hwfn,
 			   struct ecore_ptt *p_ptt,
 			   dma_addr_t sb_phys, u16 igu_sb_id,
@@ -1420,8 +1463,9 @@ void ecore_int_cau_conf_sb(struct ecore_hwfn *p_hwfn,
 		else
 			timer_res = 2;
 		timeset = (u8)(p_hwfn->p_dev->rx_coalesce_usecs >> timer_res);
-		ecore_int_cau_conf_pi(p_hwfn, p_ptt, igu_sb_id, RX_PI,
-				      ECORE_COAL_RX_STATE_MACHINE, timeset);
+		_ecore_int_cau_conf_pi(p_hwfn, p_ptt, igu_sb_id, RX_PI,
+				       ECORE_COAL_RX_STATE_MACHINE,
+				       timeset);
 
 		if (p_hwfn->p_dev->tx_coalesce_usecs <= 0x7F)
 			timer_res = 0;
@@ -1431,46 +1475,14 @@ void ecore_int_cau_conf_sb(struct ecore_hwfn *p_hwfn,
 			timer_res = 2;
 		timeset = (u8)(p_hwfn->p_dev->tx_coalesce_usecs >> timer_res);
 		for (i = 0; i < num_tc; i++) {
-			ecore_int_cau_conf_pi(p_hwfn, p_ptt,
-					      igu_sb_id, TX_PI(i),
-					      ECORE_COAL_TX_STATE_MACHINE,
-					      timeset);
+			_ecore_int_cau_conf_pi(p_hwfn, p_ptt,
+					       igu_sb_id, TX_PI(i),
+					       ECORE_COAL_TX_STATE_MACHINE,
+					       timeset);
 		}
 	}
 }
 
-void ecore_int_cau_conf_pi(struct ecore_hwfn *p_hwfn,
-			   struct ecore_ptt *p_ptt,
-			   u16 igu_sb_id, u32 pi_index,
-			   enum ecore_coalescing_fsm coalescing_fsm, u8 timeset)
-{
-	struct cau_pi_entry pi_entry;
-	u32 sb_offset, pi_offset;
-
-	if (IS_VF(p_hwfn->p_dev))
-		return;		/* @@@TBD MichalK- VF CAU... */
-
-	sb_offset = igu_sb_id * PIS_PER_SB;
-	OSAL_MEMSET(&pi_entry, 0, sizeof(struct cau_pi_entry));
-
-	SET_FIELD(pi_entry.prod, CAU_PI_ENTRY_PI_TIMESET, timeset);
-	if (coalescing_fsm == ECORE_COAL_RX_STATE_MACHINE)
-		SET_FIELD(pi_entry.prod, CAU_PI_ENTRY_FSM_SEL, 0);
-	else
-		SET_FIELD(pi_entry.prod, CAU_PI_ENTRY_FSM_SEL, 1);
-
-	pi_offset = sb_offset + pi_index;
-	if (p_hwfn->hw_init_done) {
-		ecore_wr(p_hwfn, p_ptt,
-			 CAU_REG_PI_MEMORY + pi_offset * sizeof(u32),
-			 *((u32 *)&(pi_entry)));
-	} else {
-		STORE_RT_REG(p_hwfn,
-			     CAU_REG_PI_MEMORY_RT_OFFSET + pi_offset,
-			     *((u32 *)&(pi_entry)));
-	}
-}
-
 void ecore_int_sb_setup(struct ecore_hwfn *p_hwfn,
 			struct ecore_ptt *p_ptt, struct ecore_sb_info *sb_info)
 {
@@ -1483,16 +1495,50 @@ void ecore_int_sb_setup(struct ecore_hwfn *p_hwfn,
 				      sb_info->igu_sb_id, 0, 0);
 }
 
-/**
- * @brief ecore_get_igu_sb_id - given a sw sb_id return the
- *        igu_sb_id
- *
- * @param p_hwfn
- * @param sb_id
- *
- * @return u16
- */
-static u16 ecore_get_igu_sb_id(struct ecore_hwfn *p_hwfn, u16 sb_id)
+struct ecore_igu_block *
+ecore_get_igu_free_sb(struct ecore_hwfn *p_hwfn, bool b_is_pf)
+{
+	struct ecore_igu_block *p_block;
+	u16 igu_id;
+
+	for (igu_id = 0; igu_id < ECORE_MAPPING_MEMORY_SIZE(p_hwfn->p_dev);
+	     igu_id++) {
+		p_block = &p_hwfn->hw_info.p_igu_info->entry[igu_id];
+
+		if (!(p_block->status & ECORE_IGU_STATUS_VALID) ||
+		    !(p_block->status & ECORE_IGU_STATUS_FREE))
+			continue;
+
+		if (!!(p_block->status & ECORE_IGU_STATUS_PF) ==
+		    b_is_pf)
+			return p_block;
+	}
+
+	return OSAL_NULL;
+}
+
+static u16 ecore_get_pf_igu_sb_id(struct ecore_hwfn *p_hwfn,
+				  u16 vector_id)
+{
+	struct ecore_igu_block *p_block;
+	u16 igu_id;
+
+	for (igu_id = 0; igu_id < ECORE_MAPPING_MEMORY_SIZE(p_hwfn->p_dev);
+	     igu_id++) {
+		p_block = &p_hwfn->hw_info.p_igu_info->entry[igu_id];
+
+		if (!(p_block->status & ECORE_IGU_STATUS_VALID) ||
+		    !p_block->is_pf ||
+		    p_block->vector_number != vector_id)
+			continue;
+
+		return igu_id;
+	}
+
+	return ECORE_SB_INVALID_IDX;
+}
+
+u16 ecore_get_igu_sb_id(struct ecore_hwfn *p_hwfn, u16 sb_id)
 {
 	u16 igu_sb_id;
 
@@ -1500,11 +1546,15 @@ static u16 ecore_get_igu_sb_id(struct ecore_hwfn *p_hwfn, u16 sb_id)
 	if (sb_id == ECORE_SP_SB_ID)
 		igu_sb_id = p_hwfn->hw_info.p_igu_info->igu_dsb_id;
 	else if (IS_PF(p_hwfn->p_dev))
-		igu_sb_id = sb_id + p_hwfn->hw_info.p_igu_info->igu_base_sb;
+		igu_sb_id = ecore_get_pf_igu_sb_id(p_hwfn, sb_id + 1);
 	else
 		igu_sb_id = ecore_vf_get_igu_sb_id(p_hwfn, sb_id);
 
-	if (sb_id == ECORE_SP_SB_ID)
+	if (igu_sb_id == ECORE_SB_INVALID_IDX)
+		DP_NOTICE(p_hwfn, true,
+			  "Slowpath SB vector %04x doesn't exist\n",
+			  sb_id);
+	else if (sb_id == ECORE_SP_SB_ID)
 		DP_VERBOSE(p_hwfn, ECORE_MSG_INTR,
 			   "Slowpath SB index in IGU is 0x%04x\n", igu_sb_id);
 	else
@@ -1525,9 +1575,24 @@ enum _ecore_status_t ecore_int_sb_init(struct ecore_hwfn *p_hwfn,
 
 	sb_info->igu_sb_id = ecore_get_igu_sb_id(p_hwfn, sb_id);
 
+	if (sb_info->igu_sb_id == ECORE_SB_INVALID_IDX)
+		return ECORE_INVAL;
+
+	/* Let the igu info reference the client's SB info */
 	if (sb_id != ECORE_SP_SB_ID) {
-		p_hwfn->sbs_info[sb_id] = sb_info;
-		p_hwfn->num_sbs++;
+		if (IS_PF(p_hwfn->p_dev)) {
+			struct ecore_igu_info *p_info;
+			struct ecore_igu_block *p_block;
+
+			p_info = p_hwfn->hw_info.p_igu_info;
+			p_block = &p_info->entry[sb_info->igu_sb_id];
+
+			p_block->sb_info = sb_info;
+			p_block->status &= ~ECORE_IGU_STATUS_FREE;
+			p_info->usage.free_cnt--;
+		} else {
+			ecore_vf_set_sb_info(p_hwfn, sb_id, sb_info);
+		}
 	}
 #ifdef ECORE_CONFIG_DIRECT_HWFN
 	sb_info->p_hwfn = p_hwfn;
@@ -1559,20 +1624,35 @@ enum _ecore_status_t ecore_int_sb_release(struct ecore_hwfn *p_hwfn,
 					  struct ecore_sb_info *sb_info,
 					  u16 sb_id)
 {
-	if (sb_id == ECORE_SP_SB_ID) {
-		DP_ERR(p_hwfn, "Do Not free sp sb using this function");
-		return ECORE_INVAL;
-	}
+	struct ecore_igu_info *p_info;
+	struct ecore_igu_block *p_block;
+
+	if (sb_info == OSAL_NULL)
+		return ECORE_SUCCESS;
 
 	/* zero status block and ack counter */
 	sb_info->sb_ack = 0;
 	OSAL_MEMSET(sb_info->sb_virt, 0, sizeof(*sb_info->sb_virt));
 
-	if (p_hwfn->sbs_info[sb_id] != OSAL_NULL) {
-		p_hwfn->sbs_info[sb_id] = OSAL_NULL;
-		p_hwfn->num_sbs--;
+	if (IS_VF(p_hwfn->p_dev)) {
+		ecore_vf_set_sb_info(p_hwfn, sb_id, OSAL_NULL);
+		return ECORE_SUCCESS;
 	}
 
+	p_info = p_hwfn->hw_info.p_igu_info;
+	p_block = &p_info->entry[sb_info->igu_sb_id];
+
+	/* Vector 0 is reserved to Default SB */
+	if (p_block->vector_number == 0) {
+		DP_ERR(p_hwfn, "Do Not free sp sb using this function");
+		return ECORE_INVAL;
+	}
+
+	/* Lose reference to client's SB info, and fix counters */
+	p_block->sb_info = OSAL_NULL;
+	p_block->status |= ECORE_IGU_STATUS_FREE;
+	p_info->usage.free_cnt++;
+
 	return ECORE_SUCCESS;
 }
 
@@ -1778,11 +1858,13 @@ void ecore_int_igu_disable_int(struct ecore_hwfn *p_hwfn,
 
 #define IGU_CLEANUP_SLEEP_LENGTH		(1000)
 static void ecore_int_igu_cleanup_sb(struct ecore_hwfn *p_hwfn,
-			      struct ecore_ptt *p_ptt,
-			      u32 sb_id, bool cleanup_set, u16 opaque_fid)
+				     struct ecore_ptt *p_ptt,
+				     u32 igu_sb_id,
+				     bool cleanup_set,
+				     u16 opaque_fid)
 {
 	u32 cmd_ctrl = 0, val = 0, sb_bit = 0, sb_bit_addr = 0, data = 0;
-	u32 pxp_addr = IGU_CMD_INT_ACK_BASE + sb_id;
+	u32 pxp_addr = IGU_CMD_INT_ACK_BASE + igu_sb_id;
 	u32 sleep_cnt = IGU_CLEANUP_SLEEP_LENGTH;
 	u8 type = 0;		/* FIXME MichalS type??? */
 
@@ -1813,8 +1895,8 @@ static void ecore_int_igu_cleanup_sb(struct ecore_hwfn *p_hwfn,
 	OSAL_MMIOWB(p_hwfn->p_dev);
 
 	/* calculate where to read the status bit from */
-	sb_bit = 1 << (sb_id % 32);
-	sb_bit_addr = sb_id / 32 * sizeof(u32);
+	sb_bit = 1 << (igu_sb_id % 32);
+	sb_bit_addr = igu_sb_id / 32 * sizeof(u32);
 
 	sb_bit_addr += IGU_REG_CLEANUP_STATUS_0 + (0x80 * type);
 
@@ -1829,21 +1911,28 @@ static void ecore_int_igu_cleanup_sb(struct ecore_hwfn *p_hwfn,
 	if (!sleep_cnt)
 		DP_NOTICE(p_hwfn, true,
 			  "Timeout waiting for clear status 0x%08x [for sb %d]\n",
-			  val, sb_id);
+			  val, igu_sb_id);
 }
 
 void ecore_int_igu_init_pure_rt_single(struct ecore_hwfn *p_hwfn,
 				       struct ecore_ptt *p_ptt,
-				       u32 sb_id, u16 opaque, bool b_set)
+				       u16 igu_sb_id, u16 opaque, bool b_set)
 {
+	struct ecore_igu_block *p_block;
 	int pi, i;
 
+	p_block = &p_hwfn->hw_info.p_igu_info->entry[igu_sb_id];
+	DP_VERBOSE(p_hwfn, ECORE_MSG_INTR,
+		   "Cleaning SB [%04x]: func_id= %d is_pf = %d vector_num = 0x%0x\n",
+		   igu_sb_id, p_block->function_id, p_block->is_pf,
+		   p_block->vector_number);
+
 	/* Set */
 	if (b_set)
-		ecore_int_igu_cleanup_sb(p_hwfn, p_ptt, sb_id, 1, opaque);
+		ecore_int_igu_cleanup_sb(p_hwfn, p_ptt, igu_sb_id, 1, opaque);
 
 	/* Clear */
-	ecore_int_igu_cleanup_sb(p_hwfn, p_ptt, sb_id, 0, opaque);
+	ecore_int_igu_cleanup_sb(p_hwfn, p_ptt, igu_sb_id, 0, opaque);
 
 	/* Wait for the IGU SB to cleanup */
 	for (i = 0; i < IGU_CLEANUP_SLEEP_LENGTH; i++) {
@@ -1851,8 +1940,8 @@ void ecore_int_igu_init_pure_rt_single(struct ecore_hwfn *p_hwfn,
 
 		val = ecore_rd(p_hwfn, p_ptt,
 			       IGU_REG_WRITE_DONE_PENDING +
-			       ((sb_id / 32) * 4));
-		if (val & (1 << (sb_id % 32)))
+			       ((igu_sb_id / 32) * 4));
+		if (val & (1 << (igu_sb_id % 32)))
 			OSAL_UDELAY(10);
 		else
 			break;
@@ -1860,21 +1949,22 @@ void ecore_int_igu_init_pure_rt_single(struct ecore_hwfn *p_hwfn,
 	if (i == IGU_CLEANUP_SLEEP_LENGTH)
 		DP_NOTICE(p_hwfn, true,
 			  "Failed SB[0x%08x] still appearing in WRITE_DONE_PENDING\n",
-			  sb_id);
+			  igu_sb_id);
 
 	/* Clear the CAU for the SB */
 	for (pi = 0; pi < 12; pi++)
 		ecore_wr(p_hwfn, p_ptt,
-			 CAU_REG_PI_MEMORY + (sb_id * 12 + pi) * 4, 0);
+			 CAU_REG_PI_MEMORY + (igu_sb_id * 12 + pi) * 4, 0);
 }
 
 void ecore_int_igu_init_pure_rt(struct ecore_hwfn *p_hwfn,
 				struct ecore_ptt *p_ptt,
 				bool b_set, bool b_slowpath)
 {
-	u32 igu_base_sb = p_hwfn->hw_info.p_igu_info->igu_base_sb;
-	u32 igu_sb_cnt = p_hwfn->hw_info.p_igu_info->igu_sb_cnt;
-	u32 sb_id = 0, val = 0;
+	struct ecore_igu_info *p_info = p_hwfn->hw_info.p_igu_info;
+	struct ecore_igu_block *p_block;
+	u16 igu_sb_id = 0;
+	u32 val = 0;
 
 	/* @@@TBD MichalK temporary... should be moved to init-tool... */
 	val = ecore_rd(p_hwfn, p_ptt, IGU_REG_BLOCK_CONFIGURATION);
@@ -1883,53 +1973,204 @@ void ecore_int_igu_init_pure_rt(struct ecore_hwfn *p_hwfn,
 	ecore_wr(p_hwfn, p_ptt, IGU_REG_BLOCK_CONFIGURATION, val);
 	/* end temporary */
 
-	DP_VERBOSE(p_hwfn, ECORE_MSG_INTR,
-		   "IGU cleaning SBs [%d,...,%d]\n",
-		   igu_base_sb, igu_base_sb + igu_sb_cnt - 1);
+	for (igu_sb_id = 0;
+	     igu_sb_id < ECORE_MAPPING_MEMORY_SIZE(p_hwfn->p_dev);
+	     igu_sb_id++) {
+		p_block = &p_info->entry[igu_sb_id];
 
-	for (sb_id = igu_base_sb; sb_id < igu_base_sb + igu_sb_cnt; sb_id++)
-		ecore_int_igu_init_pure_rt_single(p_hwfn, p_ptt, sb_id,
+		if (!(p_block->status & ECORE_IGU_STATUS_VALID) ||
+		    !p_block->is_pf ||
+		    (p_block->status & ECORE_IGU_STATUS_DSB))
+			continue;
+
+		ecore_int_igu_init_pure_rt_single(p_hwfn, p_ptt, igu_sb_id,
 						  p_hwfn->hw_info.opaque_fid,
 						  b_set);
+	}
 
-	if (!b_slowpath)
-		return;
+	if (b_slowpath)
+		ecore_int_igu_init_pure_rt_single(p_hwfn, p_ptt,
+						  p_info->igu_dsb_id,
+						  p_hwfn->hw_info.opaque_fid,
+						  b_set);
+}
 
-	sb_id = p_hwfn->hw_info.p_igu_info->igu_dsb_id;
-	DP_VERBOSE(p_hwfn, ECORE_MSG_INTR,
-		   "IGU cleaning slowpath SB [%d]\n", sb_id);
-	ecore_int_igu_init_pure_rt_single(p_hwfn, p_ptt, sb_id,
-					  p_hwfn->hw_info.opaque_fid, b_set);
+int ecore_int_igu_reset_cam(struct ecore_hwfn *p_hwfn,
+			    struct ecore_ptt *p_ptt)
+{
+	struct ecore_igu_info *p_info = p_hwfn->hw_info.p_igu_info;
+	struct ecore_igu_block *p_block;
+	int pf_sbs, vf_sbs;
+	u16 igu_sb_id;
+	u32 val, rval;
+
+	if (!RESC_NUM(p_hwfn, ECORE_SB)) {
+		/* We're using an old MFW - have to prevent any switching
+		 * of SBs between PF and VFs as later driver wouldn't be
+		 * able to tell which belongs to which.
+		 */
+		p_info->b_allow_pf_vf_change = false;
+	} else {
+		/* Use the numbers the MFW have provided -
+		 * don't forget MFW accounts for the default SB as well.
+		 */
+		p_info->b_allow_pf_vf_change = true;
+
+		if (p_info->usage.cnt != RESC_NUM(p_hwfn, ECORE_SB) - 1) {
+			DP_INFO(p_hwfn,
+				"MFW notifies of 0x%04x PF SBs; IGU indicates of only 0x%04x\n",
+				RESC_NUM(p_hwfn, ECORE_SB) - 1,
+				p_info->usage.cnt);
+			p_info->usage.cnt = RESC_NUM(p_hwfn, ECORE_SB) - 1;
+		}
+
+		/* TODO - how do we learn about VF SBs from MFW? */
+		if (IS_PF_SRIOV(p_hwfn)) {
+			u16 vfs = p_hwfn->p_dev->p_iov_info->total_vfs;
+
+			if (vfs != p_info->usage.iov_cnt)
+				DP_VERBOSE(p_hwfn, ECORE_MSG_INTR,
+					   "0x%04x VF SBs in IGU CAM != PCI configuration 0x%04x\n",
+					   p_info->usage.iov_cnt, vfs);
+
+			/* At this point we know how many SBs we have totally
+			 * in IGU + number of PF SBs. So we can validate that
+			 * we'd have sufficient for VF.
+			 */
+			if (vfs > p_info->usage.free_cnt +
+				  p_info->usage.free_cnt_iov -
+				  p_info->usage.cnt) {
+				DP_NOTICE(p_hwfn, true,
+					  "Not enough SBs for VFs - 0x%04x SBs, from which %04x PFs and %04x are required\n",
+					  p_info->usage.free_cnt +
+					  p_info->usage.free_cnt_iov,
+					  p_info->usage.cnt, vfs);
+				return ECORE_INVAL;
+			}
+		}
+	}
+
+	/* Cap the number of VFs SBs by the number of VFs */
+	if (IS_PF_SRIOV(p_hwfn))
+		p_info->usage.iov_cnt = p_hwfn->p_dev->p_iov_info->total_vfs;
+
+	/* Mark all SBs as free, now in the right PF/VFs division */
+	p_info->usage.free_cnt = p_info->usage.cnt;
+	p_info->usage.free_cnt_iov = p_info->usage.iov_cnt;
+	p_info->usage.orig = p_info->usage.cnt;
+	p_info->usage.iov_orig = p_info->usage.iov_cnt;
+
+	/* We now proceed to re-configure the IGU cam to reflect the initial
+	 * configuration. We can start with the Default SB.
+	 */
+	pf_sbs = p_info->usage.cnt;
+	vf_sbs = p_info->usage.iov_cnt;
+
+	for (igu_sb_id = p_info->igu_dsb_id;
+	     igu_sb_id < ECORE_MAPPING_MEMORY_SIZE(p_hwfn->p_dev);
+	     igu_sb_id++) {
+		p_block = &p_info->entry[igu_sb_id];
+		val = 0;
+
+		if (!(p_block->status & ECORE_IGU_STATUS_VALID))
+			continue;
+
+		if (p_block->status & ECORE_IGU_STATUS_DSB) {
+			p_block->function_id = p_hwfn->rel_pf_id;
+			p_block->is_pf = 1;
+			p_block->vector_number = 0;
+			p_block->status = ECORE_IGU_STATUS_VALID |
+					  ECORE_IGU_STATUS_PF |
+					  ECORE_IGU_STATUS_DSB;
+		} else if (pf_sbs) {
+			pf_sbs--;
+			p_block->function_id = p_hwfn->rel_pf_id;
+			p_block->is_pf = 1;
+			p_block->vector_number = p_info->usage.cnt - pf_sbs;
+			p_block->status = ECORE_IGU_STATUS_VALID |
+					  ECORE_IGU_STATUS_PF |
+					  ECORE_IGU_STATUS_FREE;
+		} else if (vf_sbs) {
+			p_block->function_id =
+				p_hwfn->p_dev->p_iov_info->first_vf_in_pf +
+				p_info->usage.iov_cnt - vf_sbs;
+			p_block->is_pf = 0;
+			p_block->vector_number = 0;
+			p_block->status = ECORE_IGU_STATUS_VALID |
+					  ECORE_IGU_STATUS_FREE;
+			vf_sbs--;
+		} else {
+			p_block->function_id = 0;
+			p_block->is_pf = 0;
+			p_block->vector_number = 0;
+		}
+
+		SET_FIELD(val, IGU_MAPPING_LINE_FUNCTION_NUMBER,
+			  p_block->function_id);
+		SET_FIELD(val, IGU_MAPPING_LINE_PF_VALID, p_block->is_pf);
+		SET_FIELD(val, IGU_MAPPING_LINE_VECTOR_NUMBER,
+			  p_block->vector_number);
+
+		/* VF entries would be enabled when VF is initializaed */
+		SET_FIELD(val, IGU_MAPPING_LINE_VALID, p_block->is_pf);
+
+		rval = ecore_rd(p_hwfn, p_ptt,
+				IGU_REG_MAPPING_MEMORY +
+				sizeof(u32) * igu_sb_id);
+
+		if (rval != val) {
+			ecore_wr(p_hwfn, p_ptt,
+				 IGU_REG_MAPPING_MEMORY +
+				 sizeof(u32) * igu_sb_id,
+				 val);
+
+			DP_VERBOSE(p_hwfn, ECORE_MSG_INTR,
+				   "IGU reset: [SB 0x%04x] func_id = %d is_pf = %d vector_num = 0x%x [%08x -> %08x]\n",
+				   igu_sb_id, p_block->function_id,
+				   p_block->is_pf, p_block->vector_number,
+				   rval, val);
+		}
+	}
+
+	return 0;
+}
+
+int ecore_int_igu_reset_cam_default(struct ecore_hwfn *p_hwfn,
+				    struct ecore_ptt *p_ptt)
+{
+	struct ecore_sb_cnt_info *p_cnt = &p_hwfn->hw_info.p_igu_info->usage;
+
+	/* Return all the usage indications to default prior to the reset;
+	 * The reset expects the !orig to reflect the initial status of the
+	 * SBs, and would re-calculate the originals based on those.
+	 */
+	p_cnt->cnt = p_cnt->orig;
+	p_cnt->free_cnt = p_cnt->orig;
+	p_cnt->iov_cnt = p_cnt->iov_orig;
+	p_cnt->free_cnt_iov = p_cnt->iov_orig;
+	p_cnt->orig = 0;
+	p_cnt->iov_orig = 0;
+
+	/* TODO - we probably need to re-configure the CAU as well... */
+	return ecore_int_igu_reset_cam(p_hwfn, p_ptt);
 }
 
-static u32 ecore_int_igu_read_cam_block(struct ecore_hwfn *p_hwfn,
-					struct ecore_ptt *p_ptt, u16 sb_id)
+static void ecore_int_igu_read_cam_block(struct ecore_hwfn *p_hwfn,
+					 struct ecore_ptt *p_ptt,
+					 u16 igu_sb_id)
 {
 	u32 val = ecore_rd(p_hwfn, p_ptt,
-			   IGU_REG_MAPPING_MEMORY + sizeof(u32) * sb_id);
+			   IGU_REG_MAPPING_MEMORY + sizeof(u32) * igu_sb_id);
 	struct ecore_igu_block *p_block;
 
-	p_block = &p_hwfn->hw_info.p_igu_info->igu_map.igu_blocks[sb_id];
-
-	/* stop scanning when hit first invalid PF entry */
-	if (!GET_FIELD(val, IGU_MAPPING_LINE_VALID) &&
-	    GET_FIELD(val, IGU_MAPPING_LINE_PF_VALID))
-		goto out;
+	p_block = &p_hwfn->hw_info.p_igu_info->entry[igu_sb_id];
 
 	/* Fill the block information */
-	p_block->status = ECORE_IGU_STATUS_VALID;
 	p_block->function_id = GET_FIELD(val, IGU_MAPPING_LINE_FUNCTION_NUMBER);
 	p_block->is_pf = GET_FIELD(val, IGU_MAPPING_LINE_PF_VALID);
 	p_block->vector_number = GET_FIELD(val, IGU_MAPPING_LINE_VECTOR_NUMBER);
 
-	DP_VERBOSE(p_hwfn, ECORE_MSG_INTR,
-		   "IGU_BLOCK: [SB 0x%04x, Value in CAM 0x%08x] func_id = %d"
-		   " is_pf = %d vector_num = 0x%x\n",
-		   sb_id, val, p_block->function_id, p_block->is_pf,
-		   p_block->vector_number);
-
-out:
-	return val;
+	p_block->igu_sb_id = igu_sb_id;
 }
 
 enum _ecore_status_t ecore_int_igu_read_cam(struct ecore_hwfn *p_hwfn,
@@ -1937,140 +2178,217 @@ enum _ecore_status_t ecore_int_igu_read_cam(struct ecore_hwfn *p_hwfn,
 {
 	struct ecore_igu_info *p_igu_info;
 	struct ecore_igu_block *p_block;
-	u32 min_vf = 0, max_vf = 0, val;
-	u16 sb_id, last_iov_sb_id = 0;
-	u16 prev_sb_id = 0xFF;
+	u32 min_vf = 0, max_vf = 0;
+	u16 igu_sb_id;
 
-	p_hwfn->hw_info.p_igu_info = OSAL_ALLOC(p_hwfn->p_dev,
-						GFP_KERNEL,
-						sizeof(*p_igu_info));
+	p_hwfn->hw_info.p_igu_info = OSAL_ZALLOC(p_hwfn->p_dev,
+						 GFP_KERNEL,
+						 sizeof(*p_igu_info));
 	if (!p_hwfn->hw_info.p_igu_info)
 		return ECORE_NOMEM;
-
-	OSAL_MEMSET(p_hwfn->hw_info.p_igu_info, 0, sizeof(*p_igu_info));
-
 	p_igu_info = p_hwfn->hw_info.p_igu_info;
 
-	/* Initialize base sb / sb cnt for PFs and VFs */
-	p_igu_info->igu_base_sb = 0xffff;
-	p_igu_info->igu_sb_cnt = 0;
-	p_igu_info->igu_dsb_id = 0xffff;
-	p_igu_info->igu_base_sb_iov = 0xffff;
+	/* Distinguish between existent and onn-existent default SB */
+	p_igu_info->igu_dsb_id = ECORE_SB_INVALID_IDX;
 
+	/* Find the range of VF ids whose SB belong to this PF */
 	if (p_hwfn->p_dev->p_iov_info) {
 		struct ecore_hw_sriov_info *p_iov = p_hwfn->p_dev->p_iov_info;
 
 		min_vf = p_iov->first_vf_in_pf;
 		max_vf = p_iov->first_vf_in_pf + p_iov->total_vfs;
 	}
-	for (sb_id = 0;
-	     sb_id < ECORE_MAPPING_MEMORY_SIZE(p_hwfn->p_dev);
-	     sb_id++) {
-		p_block = &p_igu_info->igu_map.igu_blocks[sb_id];
-		val = ecore_int_igu_read_cam_block(p_hwfn, p_ptt, sb_id);
-		if (!GET_FIELD(val, IGU_MAPPING_LINE_VALID) &&
-		    GET_FIELD(val, IGU_MAPPING_LINE_PF_VALID))
-			break;
 
-		if (p_block->is_pf) {
-			if (p_block->function_id == p_hwfn->rel_pf_id) {
-				p_block->status |= ECORE_IGU_STATUS_PF;
-
-				if (p_block->vector_number == 0) {
-					if (p_igu_info->igu_dsb_id == 0xffff)
-						p_igu_info->igu_dsb_id = sb_id;
-				} else {
-					if (p_igu_info->igu_base_sb == 0xffff) {
-						p_igu_info->igu_base_sb = sb_id;
-					} else if (prev_sb_id != sb_id - 1) {
-						DP_NOTICE(p_hwfn->p_dev, false,
-							  "consecutive igu"
-							  " vectors for HWFN"
-							  " %x broken",
-							  p_hwfn->rel_pf_id);
-						break;
-					}
-					prev_sb_id = sb_id;
-					/* we don't count the default */
-					(p_igu_info->igu_sb_cnt)++;
-				}
-			}
-		} else {
-			if ((p_block->function_id >= min_vf) &&
-			    (p_block->function_id < max_vf)) {
-				/* Available for VFs of this PF */
-				if (p_igu_info->igu_base_sb_iov == 0xffff) {
-					p_igu_info->igu_base_sb_iov = sb_id;
-				} else if (last_iov_sb_id != sb_id - 1) {
-					if (!val)
-						DP_VERBOSE(p_hwfn->p_dev,
-							   ECORE_MSG_INTR,
-							   "First uninited IGU"
-							   " CAM entry at"
-							   " index 0x%04x\n",
-							   sb_id);
-					else
-						DP_NOTICE(p_hwfn->p_dev, false,
-							  "Consecutive igu"
-							  " vectors for HWFN"
-							  " %x vfs is broken"
-							  " [jumps from %04x"
-							  " to %04x]\n",
-							  p_hwfn->rel_pf_id,
-							  last_iov_sb_id,
-							  sb_id);
-					break;
-				}
-				p_block->status |= ECORE_IGU_STATUS_FREE;
-				p_hwfn->hw_info.p_igu_info->free_blks++;
-				last_iov_sb_id = sb_id;
-			}
+	for (igu_sb_id = 0;
+	     igu_sb_id < ECORE_MAPPING_MEMORY_SIZE(p_hwfn->p_dev);
+	     igu_sb_id++) {
+		/* Read current entry; Notice it might not belong to this PF */
+		ecore_int_igu_read_cam_block(p_hwfn, p_ptt, igu_sb_id);
+		p_block = &p_igu_info->entry[igu_sb_id];
+
+		if ((p_block->is_pf) &&
+		    (p_block->function_id == p_hwfn->rel_pf_id)) {
+			p_block->status = ECORE_IGU_STATUS_PF |
+					  ECORE_IGU_STATUS_VALID |
+					  ECORE_IGU_STATUS_FREE;
+
+			if (p_igu_info->igu_dsb_id != ECORE_SB_INVALID_IDX)
+				p_igu_info->usage.cnt++;
+		} else if (!(p_block->is_pf) &&
+			   (p_block->function_id >= min_vf) &&
+			   (p_block->function_id < max_vf)) {
+			/* Available for VFs of this PF */
+			p_block->status = ECORE_IGU_STATUS_VALID |
+					  ECORE_IGU_STATUS_FREE;
+
+			if (p_igu_info->igu_dsb_id != ECORE_SB_INVALID_IDX)
+				p_igu_info->usage.iov_cnt++;
+		}
+
+		/* Mark the First entry belonging to the PF or its VFs
+		 * as the default SB [we'll reset IGU prior to first usage].
+		 */
+		if ((p_block->status & ECORE_IGU_STATUS_VALID) &&
+		    (p_igu_info->igu_dsb_id == ECORE_SB_INVALID_IDX)) {
+			p_igu_info->igu_dsb_id = igu_sb_id;
+			p_block->status |= ECORE_IGU_STATUS_DSB;
 		}
+
+		/* While this isn't suitable for all clients, limit number
+		 * of prints by having each PF print only its entries with the
+		 * exception of PF0 which would print everything.
+		 */
+		if ((p_block->status & ECORE_IGU_STATUS_VALID) ||
+		    (p_hwfn->abs_pf_id == 0))
+			DP_VERBOSE(p_hwfn, ECORE_MSG_INTR,
+				   "IGU_BLOCK: [SB 0x%04x] func_id = %d is_pf = %d vector_num = 0x%x\n",
+				   igu_sb_id, p_block->function_id,
+				   p_block->is_pf, p_block->vector_number);
+	}
+
+	if (p_igu_info->igu_dsb_id == ECORE_SB_INVALID_IDX) {
+		DP_NOTICE(p_hwfn, true,
+			  "IGU CAM returned invalid values igu_dsb_id=0x%x\n",
+			  p_igu_info->igu_dsb_id);
+		return ECORE_INVAL;
+	}
+
+	/* All non default SB are considered free at this point */
+	p_igu_info->usage.free_cnt = p_igu_info->usage.cnt;
+	p_igu_info->usage.free_cnt_iov = p_igu_info->usage.iov_cnt;
+
+	DP_VERBOSE(p_hwfn, ECORE_MSG_INTR,
+		   "igu_dsb_id=0x%x, num Free SBs - PF: %04x VF: %04x [might change after resource allocation]\n",
+		   p_igu_info->igu_dsb_id, p_igu_info->usage.cnt,
+		   p_igu_info->usage.iov_cnt);
+
+	return ECORE_SUCCESS;
+}
+
+enum _ecore_status_t
+ecore_int_igu_relocate_sb(struct ecore_hwfn *p_hwfn, struct ecore_ptt *p_ptt,
+			  u16 sb_id, bool b_to_vf)
+{
+	struct ecore_igu_info *p_info = p_hwfn->hw_info.p_igu_info;
+	struct ecore_igu_block *p_block = OSAL_NULL;
+	u16 igu_sb_id = 0, vf_num = 0;
+	u32 val = 0;
+
+	if (IS_VF(p_hwfn->p_dev) || !IS_PF_SRIOV(p_hwfn))
+		return ECORE_INVAL;
+
+	if (sb_id == ECORE_SP_SB_ID)
+		return ECORE_INVAL;
+
+	if (!p_info->b_allow_pf_vf_change) {
+		DP_INFO(p_hwfn, "Can't relocate SBs as MFW is too old.\n");
+		return ECORE_INVAL;
 	}
 
-	/* There's a possibility the igu_sb_cnt_iov doesn't properly reflect
-	 * the number of VF SBs [especially for first VF on engine, as we can't
-	 * diffrentiate between empty entries and its entries].
-	 * Since we don't really support more SBs than VFs today, prevent any
-	 * such configuration by sanitizing the number of SBs to equal the
-	 * number of VFs.
+	/* If we're moving a SB from PF to VF, the client had to specify
+	 * which vector it wants to move.
 	 */
-	if (IS_PF_SRIOV(p_hwfn)) {
-		u16 total_vfs = p_hwfn->p_dev->p_iov_info->total_vfs;
-
-		if (total_vfs < p_igu_info->free_blks) {
-			DP_VERBOSE(p_hwfn, (ECORE_MSG_INTR | ECORE_MSG_IOV),
-				   "Limiting number of SBs for IOV - %04x --> %04x\n",
-				   p_igu_info->free_blks,
-				   p_hwfn->p_dev->p_iov_info->total_vfs);
-			p_igu_info->free_blks = total_vfs;
-		} else if (total_vfs > p_igu_info->free_blks) {
-			DP_NOTICE(p_hwfn, true,
-				  "IGU has only %04x SBs for VFs while the device has %04x VFs\n",
-				  p_igu_info->free_blks, total_vfs);
+	if (b_to_vf) {
+		igu_sb_id = ecore_get_pf_igu_sb_id(p_hwfn, sb_id + 1);
+		if (igu_sb_id == ECORE_SB_INVALID_IDX)
 			return ECORE_INVAL;
-		}
 	}
 
-	p_igu_info->igu_sb_cnt_iov = p_igu_info->free_blks;
+	/* If we're moving a SB from VF to PF, need to validate there isn't
+	 * already a line configured for that vector.
+	 */
+	if (!b_to_vf) {
+		if (ecore_get_pf_igu_sb_id(p_hwfn, sb_id + 1) !=
+		    ECORE_SB_INVALID_IDX)
+			return ECORE_INVAL;
+	}
 
-	DP_VERBOSE(p_hwfn, ECORE_MSG_INTR,
-		   "IGU igu_base_sb=0x%x [IOV 0x%x] igu_sb_cnt=%d [IOV 0x%x] "
-		   "igu_dsb_id=0x%x\n",
-		   p_igu_info->igu_base_sb, p_igu_info->igu_base_sb_iov,
-		   p_igu_info->igu_sb_cnt, p_igu_info->igu_sb_cnt_iov,
-		   p_igu_info->igu_dsb_id);
-
-	if (p_igu_info->igu_base_sb == 0xffff ||
-	    p_igu_info->igu_dsb_id == 0xffff || p_igu_info->igu_sb_cnt == 0) {
-		DP_NOTICE(p_hwfn, true,
-			  "IGU CAM returned invalid values igu_base_sb=0x%x "
-			  "igu_sb_cnt=%d igu_dsb_id=0x%x\n",
-			  p_igu_info->igu_base_sb, p_igu_info->igu_sb_cnt,
-			  p_igu_info->igu_dsb_id);
+	/* We need to validate that the SB can actually be relocated.
+	 * This would also handle the previous case where we've explicitly
+	 * stated which IGU SB needs to move.
+	 */
+	for (; igu_sb_id < ECORE_MAPPING_MEMORY_SIZE(p_hwfn->p_dev);
+	     igu_sb_id++) {
+		p_block = &p_info->entry[igu_sb_id];
+
+		if (!(p_block->status & ECORE_IGU_STATUS_VALID) ||
+		    !(p_block->status & ECORE_IGU_STATUS_FREE) ||
+		    (!!(p_block->status & ECORE_IGU_STATUS_PF) != b_to_vf)) {
+			if (b_to_vf)
+				return ECORE_INVAL;
+			else
+				continue;
+		}
+
+		break;
+	}
+
+	if (igu_sb_id == ECORE_MAPPING_MEMORY_SIZE(p_hwfn->p_dev)) {
+		DP_VERBOSE(p_hwfn, (ECORE_MSG_INTR | ECORE_MSG_IOV),
+			   "Failed to find a free SB to move\n");
 		return ECORE_INVAL;
 	}
 
+	/* At this point, p_block points to the SB we want to relocate */
+	if (b_to_vf) {
+		p_block->status &= ~ECORE_IGU_STATUS_PF;
+
+		/* It doesn't matter which VF number we choose, since we're
+		 * going to disable the line; But let's keep it in range.
+		 */
+		vf_num = (u16)p_hwfn->p_dev->p_iov_info->first_vf_in_pf;
+
+		p_block->function_id = (u8)vf_num;
+		p_block->is_pf = 0;
+		p_block->vector_number = 0;
+
+		p_info->usage.cnt--;
+		p_info->usage.free_cnt--;
+		p_info->usage.iov_cnt++;
+		p_info->usage.free_cnt_iov++;
+
+		/* TODO - if SBs aren't really the limiting factor,
+		 * then it might not be accurate [in the since that
+		 * we might not need decrement the feature].
+		 */
+		p_hwfn->hw_info.feat_num[ECORE_PF_L2_QUE]--;
+		p_hwfn->hw_info.feat_num[ECORE_VF_L2_QUE]++;
+	} else {
+		p_block->status |= ECORE_IGU_STATUS_PF;
+		p_block->function_id = p_hwfn->rel_pf_id;
+		p_block->is_pf = 1;
+		p_block->vector_number = sb_id + 1;
+
+		p_info->usage.cnt++;
+		p_info->usage.free_cnt++;
+		p_info->usage.iov_cnt--;
+		p_info->usage.free_cnt_iov--;
+
+		p_hwfn->hw_info.feat_num[ECORE_PF_L2_QUE]++;
+		p_hwfn->hw_info.feat_num[ECORE_VF_L2_QUE]--;
+	}
+
+	/* Update the IGU and CAU with the new configuration */
+	SET_FIELD(val, IGU_MAPPING_LINE_FUNCTION_NUMBER,
+		  p_block->function_id);
+	SET_FIELD(val, IGU_MAPPING_LINE_PF_VALID, p_block->is_pf);
+	SET_FIELD(val, IGU_MAPPING_LINE_VALID, p_block->is_pf);
+	SET_FIELD(val, IGU_MAPPING_LINE_VECTOR_NUMBER,
+		  p_block->vector_number);
+
+	ecore_wr(p_hwfn, p_ptt,
+		 IGU_REG_MAPPING_MEMORY + sizeof(u32) * igu_sb_id,
+		 val);
+
+	ecore_int_cau_conf_sb(p_hwfn, p_ptt, 0,
+			      igu_sb_id, vf_num,
+			      p_block->is_pf ? 0 : 1);
+
+	DP_VERBOSE(p_hwfn, ECORE_MSG_INTR,
+		   "Relocation: [SB 0x%04x] func_id = %d is_pf = %d vector_num = 0x%x\n",
+		   igu_sb_id, p_block->function_id,
+		   p_block->is_pf, p_block->vector_number);
+
 	return ECORE_SUCCESS;
 }
 
@@ -2170,14 +2488,13 @@ void ecore_int_setup(struct ecore_hwfn *p_hwfn, struct ecore_ptt *p_ptt)
 void ecore_int_get_num_sbs(struct ecore_hwfn *p_hwfn,
 			   struct ecore_sb_cnt_info *p_sb_cnt_info)
 {
-	struct ecore_igu_info *info = p_hwfn->hw_info.p_igu_info;
+	struct ecore_igu_info *p_igu_info = p_hwfn->hw_info.p_igu_info;
 
-	if (!info || !p_sb_cnt_info)
+	if (!p_igu_info || !p_sb_cnt_info)
 		return;
 
-	p_sb_cnt_info->sb_cnt = info->igu_sb_cnt;
-	p_sb_cnt_info->sb_iov_cnt = info->igu_sb_cnt_iov;
-	p_sb_cnt_info->sb_free_blk = info->free_blks;
+	OSAL_MEMCPY(p_sb_cnt_info, &p_igu_info->usage,
+		    sizeof(*p_sb_cnt_info));
 }
 
 void ecore_int_disable_post_isr_release(struct ecore_dev *p_dev)
diff --git a/drivers/net/qede/base/ecore_int.h b/drivers/net/qede/base/ecore_int.h
index 067ed60557..b655685e51 100644
--- a/drivers/net/qede/base/ecore_int.h
+++ b/drivers/net/qede/base/ecore_int.h
@@ -21,31 +21,76 @@
 #define SB_ALIGNED_SIZE(p_hwfn)					\
 	ALIGNED_TYPE_SIZE(struct status_block, p_hwfn)
 
+#define ECORE_SB_INVALID_IDX	0xffff
+
 struct ecore_igu_block {
 	u8 status;
 #define ECORE_IGU_STATUS_FREE	0x01
 #define ECORE_IGU_STATUS_VALID	0x02
 #define ECORE_IGU_STATUS_PF	0x04
+#define ECORE_IGU_STATUS_DSB	0x08
 
 	u8 vector_number;
 	u8 function_id;
 	u8 is_pf;
-};
 
-struct ecore_igu_map {
-	struct ecore_igu_block igu_blocks[MAX_TOT_SB_PER_PATH];
+	/* Index inside IGU [meant for back reference] */
+	u16 igu_sb_id;
+
+	struct ecore_sb_info *sb_info;
 };
 
 struct ecore_igu_info {
-	struct ecore_igu_map igu_map;
+	struct ecore_igu_block entry[MAX_TOT_SB_PER_PATH];
 	u16 igu_dsb_id;
-	u16 igu_base_sb;
-	u16 igu_base_sb_iov;
-	u16 igu_sb_cnt;
-	u16 igu_sb_cnt_iov;
-	u16 free_blks;
+
+	/* The numbers can shift when using APIs to switch SBs between PF and
+	 * VF.
+	 */
+	struct ecore_sb_cnt_info usage;
+
+	/* Determine whether we can shift SBs between VFs and PFs */
+	bool b_allow_pf_vf_change;
 };
 
+/**
+ * @brief - Make sure the IGU CAM reflects the resources provided by MFW
+ *
+ * @param p_hwfn
+ * @param p_ptt
+ */
+int ecore_int_igu_reset_cam(struct ecore_hwfn *p_hwfn,
+			    struct ecore_ptt *p_ptt);
+
+/**
+ * @brief - Make sure IGU CAM reflects the default resources once again,
+ *          starting with a 'dirty' SW database.
+ * @param p_hwfn
+ * @param p_ptt
+ */
+int ecore_int_igu_reset_cam_default(struct ecore_hwfn *p_hwfn,
+				    struct ecore_ptt *p_ptt);
+
+/**
+ * @brief Translate the weakly-defined client sb-id into an IGU sb-id
+ *
+ * @param p_hwfn
+ * @param sb_id - user provided sb_id
+ *
+ * @return an index inside IGU CAM where the SB resides
+ */
+u16 ecore_get_igu_sb_id(struct ecore_hwfn *p_hwfn, u16 sb_id);
+
+/**
+ * @brief return a pointer to an unused valid SB
+ *
+ * @param p_hwfn
+ * @param b_is_pf - true iff we want a SB belonging to a PF
+ *
+ * @return point to an igu_block, OSAL_NULL if none is available
+ */
+struct ecore_igu_block *
+ecore_get_igu_free_sb(struct ecore_hwfn *p_hwfn, bool b_is_pf);
 /* TODO Names of function may change... */
 void ecore_int_igu_init_pure_rt(struct ecore_hwfn *p_hwfn,
 				struct ecore_ptt *p_ptt,
@@ -125,9 +170,11 @@ u16 ecore_int_get_sp_sb_id(struct ecore_hwfn *p_hwfn);
  * @param opaque	- opaque fid of the sb owner.
  * @param cleanup_set	- set(1) / clear(0)
  */
-void ecore_int_igu_init_pure_rt_single(struct ecore_hwfn *p_hwfn,
-				       struct ecore_ptt *p_ptt,
-				       u32 sb_id, u16 opaque, bool b_set);
+void ecore_int_igu_init_pure_rt_single(struct ecore_hwfn	*p_hwfn,
+				       struct ecore_ptt		*p_ptt,
+				       u16			sb_id,
+				       u16			opaque,
+				       bool			b_set);
 
 /**
  * @brief ecore_int_cau_conf - configure cau for a given status
diff --git a/drivers/net/qede/base/ecore_int_api.h b/drivers/net/qede/base/ecore_int_api.h
index 799fbe82e7..49d0fac08f 100644
--- a/drivers/net/qede/base/ecore_int_api.h
+++ b/drivers/net/qede/base/ecore_int_api.h
@@ -48,9 +48,15 @@ struct ecore_sb_info_dbg {
 };
 
 struct ecore_sb_cnt_info {
-	int sb_cnt;
-	int sb_iov_cnt;
-	int sb_free_blk;
+	/* Original, current, and free SBs for PF */
+	int orig;
+	int cnt;
+	int free_cnt;
+
+	/* Original, current and free SBS for child VFs */
+	int iov_orig;
+	int iov_cnt;
+	int free_cnt_iov;
 };
 
 static OSAL_INLINE u16 ecore_sb_update_sb_idx(struct ecore_sb_info *sb_info)
@@ -173,17 +179,17 @@ enum ecore_coalescing_fsm {
  *
  * @param p_hwfn
  * @param p_ptt
- * @param igu_sb_id
+ * @param p_sb
  * @param pi_index
  * @param state
  * @param timeset
  */
-void ecore_int_cau_conf_pi(struct ecore_hwfn *p_hwfn,
-			   struct ecore_ptt *p_ptt,
-			   u16 igu_sb_id,
-			   u32 pi_index,
-			   enum ecore_coalescing_fsm coalescing_fsm,
-			   u8 timeset);
+void ecore_int_cau_conf_pi(struct ecore_hwfn		*p_hwfn,
+			   struct ecore_ptt		*p_ptt,
+			   struct ecore_sb_info		*p_sb,
+			   u32				pi_index,
+			   enum ecore_coalescing_fsm	coalescing_fsm,
+			   u8				timeset);
 
 /**
  *
@@ -219,6 +225,7 @@ void ecore_int_igu_disable_int(struct ecore_hwfn *p_hwfn,
 u64 ecore_int_igu_read_sisr_reg(struct ecore_hwfn *p_hwfn);
 
 #define ECORE_SP_SB_ID 0xffff
+
 /**
  * @brief ecore_int_sb_init - Initializes the sb_info structure.
  *
@@ -324,4 +331,18 @@ enum _ecore_status_t ecore_int_get_sb_dbg(struct ecore_hwfn *p_hwfn,
 					  struct ecore_sb_info *p_sb,
 					  struct ecore_sb_info_dbg *p_info);
 
+/**
+ * @brief - Move a free Status block between PF and child VF
+ *
+ * @param p_hwfn
+ * @param p_ptt
+ * @param sb_id - The PF fastpath vector to be moved [re-assigned if claiming
+ *                from VF, given-up if moving to VF]
+ * @param b_to_vf - PF->VF == true, VF->PF == false
+ *
+ * @return ECORE_SUCCESS if SB successfully moved.
+ */
+enum _ecore_status_t
+ecore_int_igu_relocate_sb(struct ecore_hwfn *p_hwfn, struct ecore_ptt *p_ptt,
+			  u16 sb_id, bool b_to_vf);
 #endif
diff --git a/drivers/net/qede/base/ecore_l2.c b/drivers/net/qede/base/ecore_l2.c
index 839bd46377..3140fdd1bd 100644
--- a/drivers/net/qede/base/ecore_l2.c
+++ b/drivers/net/qede/base/ecore_l2.c
@@ -207,9 +207,15 @@ _ecore_eth_queue_to_cid(struct ecore_hwfn *p_hwfn,
 
 	p_cid->opaque_fid = opaque_fid;
 	p_cid->cid = cid;
-	p_cid->rel = *p_params;
 	p_cid->p_owner = p_hwfn;
 
+	/* Fill in parameters */
+	p_cid->rel.vport_id = p_params->vport_id;
+	p_cid->rel.queue_id = p_params->queue_id;
+	p_cid->rel.stats_id = p_params->stats_id;
+	p_cid->sb_igu_id = p_params->p_sb->igu_sb_id;
+	p_cid->sb_idx = p_params->sb_idx;
+
 	/* Fill-in bits related to VFs' queues if information was provided */
 	if (p_vf_params != OSAL_NULL) {
 		p_cid->vfid = p_vf_params->vfid;
@@ -251,10 +257,6 @@ _ecore_eth_queue_to_cid(struct ecore_hwfn *p_hwfn,
 		p_cid->abs.stats_id = p_cid->rel.stats_id;
 	}
 
-	/* SBs relevant information was already provided as absolute */
-	p_cid->abs.sb = p_cid->rel.sb;
-	p_cid->abs.sb_idx = p_cid->rel.sb_idx;
-
 out:
 	/* VF-images have provided the qid_usage_idx on their own.
 	 * Otherwise, we need to allocate a unique one.
@@ -273,7 +275,7 @@ out:
 		   p_cid->rel.queue_id,	p_cid->qid_usage_idx,
 		   p_cid->abs.queue_id,
 		   p_cid->rel.stats_id, p_cid->abs.stats_id,
-		   p_cid->abs.sb, p_cid->abs.sb_idx);
+		   p_cid->sb_igu_id, p_cid->sb_idx);
 
 	return p_cid;
 
@@ -901,7 +903,7 @@ ecore_eth_rxq_start_ramrod(struct ecore_hwfn *p_hwfn,
 	DP_VERBOSE(p_hwfn, ECORE_MSG_SP,
 		   "opaque_fid=0x%x, cid=0x%x, rx_qzone=0x%x, vport_id=0x%x, sb_id=0x%x\n",
 		   p_cid->opaque_fid, p_cid->cid, p_cid->abs.queue_id,
-		   p_cid->abs.vport_id, p_cid->abs.sb);
+		   p_cid->abs.vport_id, p_cid->sb_igu_id);
 
 	/* Get SPQ entry */
 	OSAL_MEMSET(&init_data, 0, sizeof(init_data));
@@ -917,8 +919,8 @@ ecore_eth_rxq_start_ramrod(struct ecore_hwfn *p_hwfn,
 
 	p_ramrod = &p_ent->ramrod.rx_queue_start;
 
-	p_ramrod->sb_id = OSAL_CPU_TO_LE16(p_cid->abs.sb);
-	p_ramrod->sb_index = p_cid->abs.sb_idx;
+	p_ramrod->sb_id = OSAL_CPU_TO_LE16(p_cid->sb_igu_id);
+	p_ramrod->sb_index = p_cid->sb_idx;
 	p_ramrod->vport_id = p_cid->abs.vport_id;
 	p_ramrod->stats_counter_id = p_cid->abs.stats_id;
 	p_ramrod->rx_queue_id = OSAL_CPU_TO_LE16(p_cid->abs.queue_id);
@@ -1153,8 +1155,8 @@ ecore_eth_txq_start_ramrod(struct ecore_hwfn *p_hwfn,
 	p_ramrod = &p_ent->ramrod.tx_queue_start;
 	p_ramrod->vport_id = p_cid->abs.vport_id;
 
-	p_ramrod->sb_id = OSAL_CPU_TO_LE16(p_cid->abs.sb);
-	p_ramrod->sb_index = p_cid->abs.sb_idx;
+	p_ramrod->sb_id = OSAL_CPU_TO_LE16(p_cid->sb_igu_id);
+	p_ramrod->sb_index = p_cid->sb_idx;
 	p_ramrod->stats_counter_id = p_cid->abs.stats_id;
 
 	p_ramrod->queue_zone_id = OSAL_CPU_TO_LE16(p_cid->abs.queue_id);
diff --git a/drivers/net/qede/base/ecore_l2.h b/drivers/net/qede/base/ecore_l2.h
index 33f1fad53b..02aa5e8b5e 100644
--- a/drivers/net/qede/base/ecore_l2.h
+++ b/drivers/net/qede/base/ecore_l2.h
@@ -18,7 +18,16 @@
 #define MAX_QUEUES_PER_QZONE	(sizeof(unsigned long) * 8)
 #define ECORE_QUEUE_CID_PF	(0xff)
 
-/* Additional parameters required for initialization of the queue_cid
+/* Almost identical to the ecore_queue_start_common_params,
+ * but here we maintain the SB index in IGU CAM.
+ */
+struct ecore_queue_cid_params {
+	u8 vport_id;
+	u16 queue_id;
+	u8 stats_id;
+};
+
+ /* Additional parameters required for initialization of the queue_cid
  * and are relevant only for a PF initializing one for its VFs.
  */
 struct ecore_queue_cid_vf_params {
@@ -44,13 +53,14 @@ struct ecore_queue_cid_vf_params {
 };
 
 struct ecore_queue_cid {
-	/* 'Relative' is a relative term ;-). Usually the indices [not counting
-	 * SBs] would be PF-relative, but there are some cases where that isn't
-	 * the case - specifically for a PF configuring its VF indices it's
-	 * possible some fields [E.g., stats-id] in 'rel' would already be abs.
-	 */
-	struct ecore_queue_start_common_params rel;
-	struct ecore_queue_start_common_params abs;
+	/* For stats-id, the `rel' is actually absolute as well */
+	struct ecore_queue_cid_params rel;
+	struct ecore_queue_cid_params abs;
+
+	/* These have no 'relative' meaning */
+	u16 sb_igu_id;
+	u8 sb_idx;
+
 	u32 cid;
 	u16 opaque_fid;
 
diff --git a/drivers/net/qede/base/ecore_l2_api.h b/drivers/net/qede/base/ecore_l2_api.h
index d09f3c4a35..a6740d5908 100644
--- a/drivers/net/qede/base/ecore_l2_api.h
+++ b/drivers/net/qede/base/ecore_l2_api.h
@@ -11,6 +11,7 @@
 
 #include "ecore_status.h"
 #include "ecore_sp_api.h"
+#include "ecore_int_api.h"
 
 #ifndef __EXTRACT__LINUX__
 enum ecore_rss_caps {
@@ -35,8 +36,7 @@ struct ecore_queue_start_common_params {
 	/* Relative, but relevant only for PFs */
 	u8 stats_id;
 
-	/* These are always absolute */
-	u16 sb;
+	struct ecore_sb_info *p_sb;
 	u8 sb_idx;
 };
 
diff --git a/drivers/net/qede/base/ecore_sriov.c b/drivers/net/qede/base/ecore_sriov.c
index 088656062c..1ec6451df5 100644
--- a/drivers/net/qede/base/ecore_sriov.c
+++ b/drivers/net/qede/base/ecore_sriov.c
@@ -446,33 +446,6 @@ static enum _ecore_status_t ecore_iov_pci_cfg_info(struct ecore_dev *p_dev)
 	return ECORE_SUCCESS;
 }
 
-static void ecore_iov_clear_vf_igu_blocks(struct ecore_hwfn *p_hwfn,
-					  struct ecore_ptt *p_ptt)
-{
-	struct ecore_igu_block *p_sb;
-	u16 sb_id;
-	u32 val;
-
-	if (!p_hwfn->hw_info.p_igu_info) {
-		DP_ERR(p_hwfn,
-		       "ecore_iov_clear_vf_igu_blocks IGU Info not inited\n");
-		return;
-	}
-
-	for (sb_id = 0;
-	     sb_id < ECORE_MAPPING_MEMORY_SIZE(p_hwfn->p_dev); sb_id++) {
-		p_sb = &p_hwfn->hw_info.p_igu_info->igu_map.igu_blocks[sb_id];
-		if ((p_sb->status & ECORE_IGU_STATUS_FREE) &&
-		    !(p_sb->status & ECORE_IGU_STATUS_PF)) {
-			val = ecore_rd(p_hwfn, p_ptt,
-				       IGU_REG_MAPPING_MEMORY + sb_id * 4);
-			SET_FIELD(val, IGU_MAPPING_LINE_VALID, 0);
-			ecore_wr(p_hwfn, p_ptt,
-				 IGU_REG_MAPPING_MEMORY + 4 * sb_id, val);
-		}
-	}
-}
-
 static void ecore_iov_setup_vfdb(struct ecore_hwfn *p_hwfn)
 {
 	struct ecore_hw_sriov_info *p_iov = p_hwfn->p_dev->p_iov_info;
@@ -634,7 +607,6 @@ void ecore_iov_setup(struct ecore_hwfn *p_hwfn, struct ecore_ptt *p_ptt)
 		return;
 
 	ecore_iov_setup_vfdb(p_hwfn);
-	ecore_iov_clear_vf_igu_blocks(p_hwfn, p_ptt);
 }
 
 void ecore_iov_free(struct ecore_hwfn *p_hwfn)
@@ -938,46 +910,38 @@ static u8 ecore_iov_alloc_vf_igu_sbs(struct ecore_hwfn *p_hwfn,
 				     struct ecore_vf_info *vf,
 				     u16 num_rx_queues)
 {
-	struct ecore_igu_block *igu_blocks;
-	int qid = 0, igu_id = 0;
+	struct ecore_igu_block *p_block;
+	struct cau_sb_entry sb_entry;
+	int qid = 0;
 	u32 val = 0;
 
-	igu_blocks = p_hwfn->hw_info.p_igu_info->igu_map.igu_blocks;
-
-	if (num_rx_queues > p_hwfn->hw_info.p_igu_info->free_blks)
-		num_rx_queues = p_hwfn->hw_info.p_igu_info->free_blks;
-
-	p_hwfn->hw_info.p_igu_info->free_blks -= num_rx_queues;
+	if (num_rx_queues > p_hwfn->hw_info.p_igu_info->usage.free_cnt_iov)
+		num_rx_queues =
+		(u16)p_hwfn->hw_info.p_igu_info->usage.free_cnt_iov;
+	p_hwfn->hw_info.p_igu_info->usage.free_cnt_iov -= num_rx_queues;
 
 	SET_FIELD(val, IGU_MAPPING_LINE_FUNCTION_NUMBER, vf->abs_vf_id);
 	SET_FIELD(val, IGU_MAPPING_LINE_VALID, 1);
 	SET_FIELD(val, IGU_MAPPING_LINE_PF_VALID, 0);
 
-	while ((qid < num_rx_queues) &&
-	       (igu_id < ECORE_MAPPING_MEMORY_SIZE(p_hwfn->p_dev))) {
-		if (igu_blocks[igu_id].status & ECORE_IGU_STATUS_FREE) {
-			struct cau_sb_entry sb_entry;
-
-			vf->igu_sbs[qid] = (u16)igu_id;
-			igu_blocks[igu_id].status &= ~ECORE_IGU_STATUS_FREE;
-
-			SET_FIELD(val, IGU_MAPPING_LINE_VECTOR_NUMBER, qid);
-
-			ecore_wr(p_hwfn, p_ptt,
-				 IGU_REG_MAPPING_MEMORY + sizeof(u32) * igu_id,
-				 val);
-
-			/* Configure igu sb in CAU which were marked valid */
-			ecore_init_cau_sb_entry(p_hwfn, &sb_entry,
-						p_hwfn->rel_pf_id,
-						vf->abs_vf_id, 1);
-			ecore_dmae_host2grc(p_hwfn, p_ptt,
-					    (u64)(osal_uintptr_t)&sb_entry,
-					    CAU_REG_SB_VAR_MEMORY +
-					    igu_id * sizeof(u64), 2, 0);
-			qid++;
-		}
-		igu_id++;
+	for (qid = 0; qid < num_rx_queues; qid++) {
+		p_block = ecore_get_igu_free_sb(p_hwfn, false);
+		vf->igu_sbs[qid] = p_block->igu_sb_id;
+		p_block->status &= ~ECORE_IGU_STATUS_FREE;
+		SET_FIELD(val, IGU_MAPPING_LINE_VECTOR_NUMBER, qid);
+
+		ecore_wr(p_hwfn, p_ptt,
+			 IGU_REG_MAPPING_MEMORY +
+			 sizeof(u32) * p_block->igu_sb_id, val);
+
+		/* Configure igu sb in CAU which were marked valid */
+		ecore_init_cau_sb_entry(p_hwfn, &sb_entry,
+					p_hwfn->rel_pf_id,
+					vf->abs_vf_id, 1);
+		ecore_dmae_host2grc(p_hwfn, p_ptt,
+				    (u64)(osal_uintptr_t)&sb_entry,
+				    CAU_REG_SB_VAR_MEMORY +
+				    p_block->igu_sb_id * sizeof(u64), 2, 0);
 	}
 
 	vf->num_sbs = (u8)num_rx_queues;
@@ -1013,10 +977,8 @@ static void ecore_iov_free_vf_igu_sbs(struct ecore_hwfn *p_hwfn,
 		SET_FIELD(val, IGU_MAPPING_LINE_VALID, 0);
 		ecore_wr(p_hwfn, p_ptt, addr, val);
 
-		p_info->igu_map.igu_blocks[igu_id].status |=
-		    ECORE_IGU_STATUS_FREE;
-
-		p_hwfn->hw_info.p_igu_info->free_blks++;
+		p_info->entry[igu_id].status |= ECORE_IGU_STATUS_FREE;
+		p_hwfn->hw_info.p_igu_info->usage.free_cnt_iov++;
 	}
 
 	vf->num_sbs = 0;
@@ -1114,34 +1076,28 @@ ecore_iov_init_hw_for_vf(struct ecore_hwfn *p_hwfn,
 	vf->vport_id = p_params->vport_id;
 	vf->rss_eng_id = p_params->rss_eng_id;
 
-	/* Perform sanity checking on the requested queue_id */
+	/* Since it's possible to relocate SBs, it's a bit difficult to check
+	 * things here. Simply check whether the index falls in the range
+	 * belonging to the PF.
+	 */
 	for (i = 0; i < p_params->num_queues; i++) {
-		u16 min_vf_qzone = (u16)FEAT_NUM(p_hwfn, ECORE_PF_L2_QUE);
-		u16 max_vf_qzone = min_vf_qzone +
-				   FEAT_NUM(p_hwfn, ECORE_VF_L2_QUE) - 1;
-
 		qid = p_params->req_rx_queue[i];
-		if (qid < min_vf_qzone || qid > max_vf_qzone) {
+		if (qid > (u16)RESC_NUM(p_hwfn, ECORE_L2_QUEUE)) {
 			DP_NOTICE(p_hwfn, true,
-				  "Can't enable Rx qid [%04x] for VF[%d]: qids [0x%04x,...,0x%04x] available\n",
+				  "Can't enable Rx qid [%04x] for VF[%d]: qids [0,,...,0x%04x] available\n",
 				  qid, p_params->rel_vf_id,
-				  min_vf_qzone, max_vf_qzone);
+				  (u16)RESC_NUM(p_hwfn, ECORE_L2_QUEUE));
 			return ECORE_INVAL;
 		}
 
 		qid = p_params->req_tx_queue[i];
-		if (qid > max_vf_qzone) {
+		if (qid > (u16)RESC_NUM(p_hwfn, ECORE_L2_QUEUE)) {
 			DP_NOTICE(p_hwfn, true,
-				  "Can't enable Tx qid [%04x] for VF[%d]: max qid 0x%04x\n",
-				  qid, p_params->rel_vf_id, max_vf_qzone);
+				  "Can't enable Tx qid [%04x] for VF[%d]: qids [0,,...,0x%04x] available\n",
+				  qid, p_params->rel_vf_id,
+				  (u16)RESC_NUM(p_hwfn, ECORE_L2_QUEUE));
 			return ECORE_INVAL;
 		}
-
-		/* If client *really* wants, Tx qid can be shared with PF */
-		if (qid < min_vf_qzone)
-			DP_VERBOSE(p_hwfn, ECORE_MSG_IOV,
-				   "VF[%d] is using PF qid [0x%04x] for Txq[0x%02x]\n",
-				   p_params->rel_vf_id, qid, i);
 	}
 
 	/* Limit number of queues according to number of CIDs */
@@ -2233,6 +2189,7 @@ static void ecore_iov_vf_mbx_start_rxq(struct ecore_hwfn *p_hwfn,
 	struct ecore_vf_queue *p_queue;
 	struct vfpf_start_rxq_tlv *req;
 	struct ecore_queue_cid *p_cid;
+	struct ecore_sb_info sb_dummy;
 	enum _ecore_status_t rc;
 
 	req = &mbx->req_virt->start_rxq;
@@ -2257,7 +2214,11 @@ static void ecore_iov_vf_mbx_start_rxq(struct ecore_hwfn *p_hwfn,
 	params.queue_id = (u8)p_queue->fw_rx_qid;
 	params.vport_id = vf->vport_id;
 	params.stats_id = vf->abs_vf_id + 0x10;
-	params.sb = req->hw_sb;
+
+	/* Since IGU index is passed via sb_info, construct a dummy one */
+	OSAL_MEM_ZERO(&sb_dummy, sizeof(sb_dummy));
+	sb_dummy.igu_sb_id = req->hw_sb;
+	params.p_sb = &sb_dummy;
 	params.sb_idx = req->sb_index;
 
 	OSAL_MEM_ZERO(&vf_params, sizeof(vf_params));
@@ -2500,6 +2461,7 @@ static void ecore_iov_vf_mbx_start_txq(struct ecore_hwfn *p_hwfn,
 	struct ecore_vf_queue *p_queue;
 	struct vfpf_start_txq_tlv *req;
 	struct ecore_queue_cid *p_cid;
+	struct ecore_sb_info sb_dummy;
 	u8 qid_usage_idx, vf_legacy;
 	u32 cid = 0;
 	enum _ecore_status_t rc;
@@ -2527,7 +2489,11 @@ static void ecore_iov_vf_mbx_start_txq(struct ecore_hwfn *p_hwfn,
 	params.queue_id = p_queue->fw_tx_qid;
 	params.vport_id = vf->vport_id;
 	params.stats_id = vf->abs_vf_id + 0x10;
-	params.sb = req->hw_sb;
+
+	/* Since IGU index is passed via sb_info, construct a dummy one */
+	OSAL_MEM_ZERO(&sb_dummy, sizeof(sb_dummy));
+	sb_dummy.igu_sb_id = req->hw_sb;
+	params.p_sb = &sb_dummy;
 	params.sb_idx = req->sb_index;
 
 	OSAL_MEM_ZERO(&vf_params, sizeof(vf_params));
diff --git a/drivers/net/qede/base/ecore_vf.c b/drivers/net/qede/base/ecore_vf.c
index e4e2517077..0a26141a25 100644
--- a/drivers/net/qede/base/ecore_vf.c
+++ b/drivers/net/qede/base/ecore_vf.c
@@ -652,8 +652,8 @@ ecore_vf_pf_rxq_start(struct ecore_hwfn *p_hwfn,
 	req->cqe_pbl_addr = cqe_pbl_addr;
 	req->cqe_pbl_size = cqe_pbl_size;
 	req->rxq_addr = bd_chain_phys_addr;
-	req->hw_sb = p_cid->rel.sb;
-	req->sb_index = p_cid->rel.sb_idx;
+	req->hw_sb = p_cid->sb_igu_id;
+	req->sb_index = p_cid->sb_idx;
 	req->bd_max_bytes = bd_max_bytes;
 	req->stat_id = -1; /* Keep initialized, for future compatibility */
 
@@ -774,8 +774,8 @@ ecore_vf_pf_txq_start(struct ecore_hwfn *p_hwfn,
 	/* Tx */
 	req->pbl_addr = pbl_addr;
 	req->pbl_size = pbl_size;
-	req->hw_sb = p_cid->rel.sb;
-	req->sb_index = p_cid->rel.sb_idx;
+	req->hw_sb = p_cid->sb_igu_id;
+	req->sb_index = p_cid->sb_idx;
 
 	ecore_vf_pf_add_qid(p_hwfn, p_cid);
 
@@ -930,9 +930,12 @@ ecore_vf_pf_vport_start(struct ecore_hwfn *p_hwfn, u8 vport_id,
 	req->only_untagged = only_untagged;
 
 	/* status blocks */
-	for (i = 0; i < p_hwfn->vf_iov_info->acquire_resp.resc.num_sbs; i++)
-		if (p_hwfn->sbs_info[i])
-			req->sb_addr[i] = p_hwfn->sbs_info[i]->sb_phys;
+	for (i = 0; i < p_hwfn->vf_iov_info->acquire_resp.resc.num_sbs; i++) {
+		struct ecore_sb_info *p_sb = p_hwfn->vf_iov_info->sbs_info[i];
+
+		if (p_sb)
+			req->sb_addr[i] = p_sb->sb_phys;
+	}
 
 	/* add list termination tlv */
 	ecore_add_tlv(p_hwfn, &p_iov->offset,
@@ -1501,6 +1504,24 @@ u16 ecore_vf_get_igu_sb_id(struct ecore_hwfn *p_hwfn,
 	return p_iov->acquire_resp.resc.hw_sbs[sb_id].hw_sb_id;
 }
 
+void ecore_vf_set_sb_info(struct ecore_hwfn *p_hwfn,
+			  u16 sb_id, struct ecore_sb_info *p_sb)
+{
+	struct ecore_vf_iov *p_iov = p_hwfn->vf_iov_info;
+
+	if (!p_iov) {
+		DP_NOTICE(p_hwfn, true, "vf_sriov_info isn't initialized\n");
+		return;
+	}
+
+	if (sb_id >= PFVF_MAX_SBS_PER_VF) {
+		DP_NOTICE(p_hwfn, true, "Can't configure SB %04x\n", sb_id);
+		return;
+	}
+
+	p_iov->sbs_info[sb_id] = p_sb;
+}
+
 enum _ecore_status_t ecore_vf_read_bulletin(struct ecore_hwfn *p_hwfn,
 					    u8 *p_change)
 {
diff --git a/drivers/net/qede/base/ecore_vf.h b/drivers/net/qede/base/ecore_vf.h
index 4096d5d8a1..d9ee96bb62 100644
--- a/drivers/net/qede/base/ecore_vf.h
+++ b/drivers/net/qede/base/ecore_vf.h
@@ -41,6 +41,14 @@ struct ecore_vf_iov {
 	 * this has to be propagated as it affects the fastpath.
 	 */
 	bool b_pre_fp_hsi;
+
+	/* Current day VFs are passing the SBs physical address on vport
+	 * start, and as they lack an IGU mapping they need to store the
+	 * addresses of previously registered SBs.
+	 * Even if we were to change configuration flow, due to backward
+	 * compatibility [with older PFs] we'd still need to store these.
+	 */
+	struct ecore_sb_info *sbs_info[PFVF_MAX_SBS_PER_VF];
 };
 
 
@@ -205,6 +213,15 @@ enum _ecore_status_t ecore_vf_pf_release(struct ecore_hwfn *p_hwfn);
 u16 ecore_vf_get_igu_sb_id(struct ecore_hwfn *p_hwfn,
 			   u16               sb_id);
 
+/**
+ * @brief Stores [or removes] a configured sb_info.
+ *
+ * @param p_hwfn
+ * @param sb_id - zero-based SB index [for fastpath]
+ * @param sb_info - may be OSAL_NULL [during removal].
+ */
+void ecore_vf_set_sb_info(struct ecore_hwfn *p_hwfn,
+			  u16 sb_id, struct ecore_sb_info *p_sb);
 
 /**
  * @brief ecore_vf_pf_vport_start - perform vport start for VF.
diff --git a/drivers/net/qede/qede_rxtx.c b/drivers/net/qede/qede_rxtx.c
index 5c3613c7ce..8ce89e5472 100644
--- a/drivers/net/qede/qede_rxtx.c
+++ b/drivers/net/qede/qede_rxtx.c
@@ -555,7 +555,7 @@ qede_rx_queue_start(struct rte_eth_dev *eth_dev, uint16_t rx_queue_id)
 		params.queue_id = rx_queue_id / edev->num_hwfns;
 		params.vport_id = 0;
 		params.stats_id = params.vport_id;
-		params.sb = fp->sb_info->igu_sb_id;
+		params.p_sb = fp->sb_info;
 		DP_INFO(edev, "rxq %u igu_sb_id 0x%x\n",
 				fp->rxq->queue_id, fp->sb_info->igu_sb_id);
 		params.sb_idx = RX_PI;
@@ -614,7 +614,7 @@ qede_tx_queue_start(struct rte_eth_dev *eth_dev, uint16_t tx_queue_id)
 		params.queue_id = tx_queue_id / edev->num_hwfns;
 		params.vport_id = 0;
 		params.stats_id = params.vport_id;
-		params.sb = fp->sb_info->igu_sb_id;
+		params.p_sb = fp->sb_info;
 		DP_INFO(edev, "txq %u igu_sb_id 0x%x\n",
 				fp->txq->queue_id, fp->sb_info->igu_sb_id);
 		params.sb_idx = TX_PI(0); /* tc = 0 */